ca retourne ces erreurs la :
[Lieur Erreur] Unresolved external 'Addition100::EcrireNombre(int)' referenced from C:\DOCUMENTS AND SETTINGS\PIERREG\BUREAU\EXERCICE 1\MAIN.OBJ
[Lieur Erreur] Unresolved external 'Addition100::Additionner100()' referenced from C:\DOCUMENTS AND SETTINGS\PIERREG\BUREAU\EXERCICE 1\MAIN.OBJ
[Lieur Erreur] Unresolved external 'Addition100::LireNombre()' referenced from C:\DOCUMENTS AND SETTINGS\PIERREG\BUREAU\EXERCICE 1\MAIN.OBJ